import unittest

import requests
from transformers import AutoProcessor

from sglang import Engine
from sglang.srt.utils import kill_process_tree
from sglang.test.kits.eval_accuracy_kit import MMLUMixin
from sglang.test.test_utils import (
    DEFAULT_IMAGE_URL,
    DEFAULT_MODEL_NAME_FOR_TEST,
    DEFAULT_SMALL_VLM_MODEL_NAME_FOR_TEST,
    DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
    DEFAULT_URL_FOR_TEST,
    CustomTestCase,
    build_vlm_image_prompt,
    is_in_amd_ci,
    popen_launch_server,
)


class TestTorchAO(CustomTestCase, MMLUMixin):
    mmlu_score_threshold = 0.60
    mmlu_num_examples = 64
    mmlu_num_threads = 32

    @classmethod
    def setUpClass(cls):
        cls.model = DEFAULT_MODEL_NAME_FOR_TEST
        cls.base_url = DEFAULT_URL_FOR_TEST
        cls.process = popen_launch_server(
            cls.model,
            cls.base_url,
            timeout=DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
            other_args=["--torchao-config", "int4wo-128"],
        )

    @classmethod
    def tearDownClass(cls):
        kill_process_tree(cls.process.pid)

    def run_decode(self, max_new_tokens):
        response = requests.post(
            self.base_url + "/generate",
            json={
                "text": "The capital of France is",
                "sampling_params": {
                    "temperature": 0,
                    "max_new_tokens": max_new_tokens,
                },
                "ignore_eos": True,
            },
        )
        return response.json()

    def test_throughput(self):
        import time

        max_tokens = 256

        tic = time.perf_counter()
        res = self.run_decode(max_tokens)
        tok = time.perf_counter()
        print(res["text"])
        throughput = max_tokens / (tok - tic)
        print(f"Throughput: {throughput} tokens/s")
        if is_in_amd_ci():
            assert throughput >= 150
        else:
            assert throughput >= 210


class TestTorchAOForVLM(CustomTestCase):
    def test_vlm_generate(self):
        model_path = DEFAULT_SMALL_VLM_MODEL_NAME_FOR_TEST
        text = build_vlm_image_prompt(
            AutoProcessor.from_pretrained(model_path), "What is in this picture?"
        )

        engine = Engine(
            model_path=model_path,
            max_total_tokens=512,
            enable_multimodal=True,
            torchao_config="fp8wo",
        )
        out = engine.generate([text], image_data=[DEFAULT_IMAGE_URL])
        engine.shutdown()
        self.assertGreater(len(out), 0)


if __name__ == "__main__":
    unittest.main()
